Here is a guide that may help you decide.
For a babysitter you employ only occasionally, give cash equal to one or two nights' pay. For a full-time nanny, give one week's to one month's pay plus a small gift from your child, something that she wouldn't buy for herself.
Give between $10 and $80; the gap is so great because the range of services is wide. Of course, the more a doorman does for you over the course of a year, the more you tip.
One week's pay or a tip equal to one service. If you use a company that sends someone different each week, don't tip at all.
Give $15 or perhaps more. If you're a frequent client or if you have a closer relationship with the stylist, you may want to add a gift or a tip equal to one visit.
Apartment building handyman.
$15 to $40 each.
A thank-you note and a small gift. A gift certificate is always appropriate. If you know the teacher's hobbies and interests, give a gift card from a bookstore, the local movie theater, or a day spa.
Cash equal to one week's service would be the cat's whiskers. Avoid giving job-related gifts, such as a fluffy vest for chilly weather. Personal service workers (like your nanny, who probably wouldn't gush at a baby alarm as a gift) need a break too.
Personal trainer/yoga instructor.
Give $60 to $100, and add a gift if you've reached your fitness goal. If you take group classes, you don't need to tip.
Coaches/ tutors/ ballet instructors/ music teachers.
A small gift that appears to be something that the child could have picked out.
A noncash gift with a value up to $20. This is for mail carriers you know and see regularly. Postal service employees cannot receive cash -- in any form or amount -- or gifts worth more than $20.
By Marshall Loeb